INFO: task syz-executor.0:5095 blocked for more than 143 seconds.
Not tainted 6.3.0-rc2-next-20230317-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:23976 pid:5095 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5305 [inline]
__schedule+0x1d23/0x5650 kernel/sched/core.c:6623
schedule+0xde/0x1a0 kernel/sched/core.c:6699
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6758
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:475
fuse_lookup.part.0+0x86/0x390 fs/fuse/dir.c:432
fuse_lookup+0x74/0x90 fs/fuse/dir.c:429
__lookup_slow+0x24c/0x460 fs/namei.c:1686
lookup_slow fs/namei.c:1703 [inline]
walk_component+0x33f/0x5a0 fs/namei.c:1994
link_path_walk.part.0+0x74e/0xd60 fs/namei.c:2321
link_path_walk fs/namei.c:2246 [inline]
path_openat+0x25c/0x2750 fs/namei.c:3711
do_filp_open+0x1ba/0x410 fs/namei.c:3742
do_sys_openat2+0x16d/0x4c0 fs/open.c:1348
do_sys_open fs/open.c:1364 [inline]
__do_sys_openat fs/open.c:1380 [inline]
__se_sys_openat fs/open.c:1375 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1375
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8a7568bc68
RSP: 002b:00007ffff8c1e9a0 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8a7568bc68
RDX: 0000000000090800 RSI: 00007f8a756e6c18 RDI: 00000000ffffff9c
RBP: 00007ffff8c1ea6c R08: 0000000000090800 R09: 00007f8a756e6c18
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 000000000001405e R14: 0000000000000008 R15: 00007ffff8c1ead0
INFO: task syz-executor.0:5112 blocked for more than 143 seconds.
Not tainted 6.3.0-rc2-next-20230317-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26912 pid:5112 ppid:5095 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5305 [inline]
__schedule+0x1d23/0x5650 kernel/sched/core.c:6623
schedule+0xde/0x1a0 kernel/sched/core.c:6699
request_wait_answer+0x46d/0x850 fs/fuse/dev.c:407
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x504/0xd80 fs/fuse/dev.c:513
fuse_lookup_name+0x27a/0x620 fs/fuse/dir.c:392
fuse_lookup.part.0+0xdf/0x390 fs/fuse/dir.c:433
fuse_lookup+0x74/0x90 fs/fuse/dir.c:429
__lookup_slow+0x24c/0x460 fs/namei.c:1686
lookup_slow fs/namei.c:1703 [inline]
walk_component+0x33f/0x5a0 fs/namei.c:1994
link_path_walk.part.0+0x74e/0xd60 fs/namei.c:2321
link_path_walk fs/namei.c:2246 [inline]
path_openat+0x25c/0x2750 fs/namei.c:3711
do_filp_open+0x1ba/0x410 fs/namei.c:3742
do_sys_openat2+0x16d/0x4c0 fs/open.c:1348
do_sys_open fs/open.c:1364 [inline]
__do_sys_openat fs/open.c:1380 [inline]
__se_sys_openat fs/open.c:1375 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1375
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8a7563e284
RSP: 002b:00007f8a7635eec0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f8a7563e284
RDX: 0000000000000002 RSI: 00007f8a7635efe0 RDI: 00000000ffffff9c
RBP: 00007f8a7635efe0 R08: 0000000000000000 R09: 00000000000010f7
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007f8a7635efdc R14: 00007f8a7635efe0 R15: 0000000020001142
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c795830 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:516
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c795530 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:516
1 lock held by khungtaskd/28:
#0: ffffffff8c796400 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x390 kernel/locking/lockdep.c:6545
2 locks held by kworker/1:2/1123:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc9000557fda8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
2 locks held by getty/4759:
#0: ffff88814a9f7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by syz-executor.0/5095:
#0: ffff888073b20150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:771 [inline]
#0: ffff888073b20150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1702 [inline]
#0: ffff888073b20150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1994
#1: ffff888073b205b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:475
2 locks held by syz-executor.0/5112:
#0: ffff888073b20150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:771 [inline]
#0: ffff888073b20150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1702 [inline]
#0: ffff888073b20150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1994
#1: ffff888073b205b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:475
2 locks held by dhcpcd/5131:
#0: ffff88807018e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1697 [inline]
#0: ffff88807018e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xe30 net/packet/af_packet.c:3193
#1: ffffffff8c7a1878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#1: ffffffff8c7a1878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770 kernel/rcu/tree_exp.h:992
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc2-next-20230317-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x33e/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4658 Comm: dhcpcd Not tainted 6.3.0-rc2-next-20230317-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:__lock_acquire+0x348/0x5df0 kernel/locking/lockdep.c:5011
Code: e6 07 0f b6 0c 11 48 89 f2 0f b6 c0 83 c2 03 01 c0 38 ca 7c 08 84 c9 0f 85 dc 14 00 00 41 83 bd 1c 0a 00 00 01 49 8d 7c 24 24 <44> 8b 8c 24 68 01 00 00 48 89 fa 83 d8 ff c1 e5 0f c1 e0 0d 41 c1
RSP: 0018:ffffc9000330f5f0 EFLAGS: 00000097
RAX: 0000000000000000 RBX: ffff8880b9944150 RCX: 0000000000000000
RDX: 0000000000000007 RSI: 0000000000000004 RDI: ffff88801e7b8ad4
RBP: 0000000000000000 R08: 1ffff11003cf7155 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801e7b8ab0
R13: ffff88801e7b8000 R14: 0000000000000000 R15: 0000000000000001
FS: 00007f5a8f09d740(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc6b694288 CR3: 00000000289bd000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire.part.0+0x11c/0x370 kernel/locking/lockdep.c:5691
local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
___slab_alloc+0x2b3/0x1400 mm/slub.c:3165
__slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3292
__slab_alloc_node mm/slub.c:3345 [inline]
slab_alloc_node mm/slub.c:3442 [inline]
slab_alloc mm/slub.c:3460 [inline]
__kmem_cache_alloc_lru mm/slub.c:3467 [inline]
kmem_cache_alloc+0x38e/0x3b0 mm/slub.c:3476
vma_lock_alloc kernel/fork.c:461 [inline]
vm_area_dup+0x55/0x300 kernel/fork.c:514
dup_mmap+0x992/0x1910 kernel/fork.c:710
dup_mm kernel/fork.c:1687 [inline]
copy_mm kernel/fork.c:1736 [inline]
copy_process+0x460c/0x76b0 kernel/fork.c:2417
kernel_clone+0xeb/0x890 kernel/fork.c:2836
__do_sys_clone+0xba/0x100 kernel/fork.c:2979
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5a8f1630f2
Code: ed 0f 85 11 01 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 a2 00 00 00 41 89 c5 85 c0 0f 85 af 00 00
RSP: 002b:00007ffc6b6739a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000559fda9114a8 RCX: 00007f5a8f1630f2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000559fda911470
R10: 00007f5a8f09da10 R11: 0000000000000246 R12: 0000000000000000
R13: 0000559fda911470 R14: 0000000000000000 R15: 0000559fda9114a4